Subject: mitsubishi eclipse
Question:

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QUESTION: you said change the fast idle air valve now that is the air idle control speed motor right i already replaced it.

Answer: Gary,
The FIAV is different from the IAC. Here are a couple web sites where you can get more information about FIAV and idle surging:

http://www.3si.org/wiki/index.php/FIAV

http://www.dsm.org/how-tos/tttt/tttt3.html

Good luck!